| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.SL.TZ2.19 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 19 | Adapted from | N/A |
Question
A spacecraft travels away from Earth in a straight line with its motors shut down. At one instant the speed of the spacecraft is 5.4 km s–1. After a time of 600 s, the speed is 5.1 km s-1. The average gravitational field strength acting on the spacecraft during this time interval is
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5.0×10–4 N kg–1
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3.0×10–2 N kg–1
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5.0×10–1 N kg–1
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30 N kg–1
Markscheme
C
Examiners report
